<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <ul>
            <li>asdfadsf</li>
            <li>asdfadsf</li>
            <li>asdfadsf</li>
        </ul>
    </div>
</body>

    <style>
        #app ul{
            /* 简写列表项 */
            list-style: none;      
            /* 列表项图像 */
            list-style-image: url("");
            /* 列表定位  inside outside*/
            list-style-position:inside;
            /* 列表类型  修改ul的type属性*/
            list-style-type:circle;
        }
    </style>
</html>